Hydraulic accommodation fan



Jan. 7, 1930. A .M. NAGA-o 1,742,36@

HYDRAULI C ACC OMMODATI ON FAN Filed July 15. 1927 Fig Patented Jan. 7, 1930 UNITED STATES PATENT OFFICE `IVIASA NAG'AO,.OF TOKYO, JAIVPAN, ASSIGNOR TO YUKA YASHIMA, OF TOKYO, JAPAN HYDRAULIC ACCOMMODATION FAN Application led July 15, 1927, Serial No. 206,087, and in Japan August 22, 1926.

This invention relates to improvementsin or relating to a hydraulic fan and has for its object to provide a new accommodation fan by which a cool and refreshing draft of air can he supplied during a long and continuous use of the fan.

In the accompanying drawings: Fig. 1 is a vertical sectional view of the new fan partly in elevation showing the inner construction thereof,

Fig. 2 is a partial sectional View alongthe line A-A of F ig. 1.

In the drawings, there is provided a hollow stand l, the top ofwhich forms a casing for a turbine rotor 2. A common shaft 3 is provided for said rotor Qand also for fan blades Jl. A fan guard 5 is littedto the top of the hoilow stand while a 4frame 6 is also fitted to the top of the hollow stand at one side thereof opposite to the varies. The shaft 8 is supported by the pointed ends of screw studs 7 and 8 respectively adjustably mountodin the central solid part of the guard 5 and in said frame 6 as shown, the ends of the shaft 3 being provided with conical axiall recesses 9 and 10 for the purpose of receiving said pointed ends. The rotor 2 is provided with a row of angle shaped blades 11 at themiddle cf `the periphery thereof and two rows of arc shaped blades 12, one at each side of the middle blades 11, the middle and the sidev blades forming two series of turbine blades of re action type in directions from thepmiddle of the periphery to both `sides of the rotor.y A tube 13 is provided for supplying pressure water, the top end 14 of which forms a water nozzle at the center of said middle blades to divide the supply of pressure Vwater to said two series of the water blades. The shaft 3 is also provided with discs 17 and18 for preventing water from splashing and leaking out of shaft holes 15 and 16 in the side plates Vof the casing at the top of said hollow stand 1. These discs 17 and 18 are respectively enclosed by sheet metal chambers 19 and 20, at

the bottoms of which drain holes 21 and 22 are provided to drain off the leakage water.

The bottom of the stand is provided with an exhaust hole 23 to be connected to a suitable v0 exhaust pipe. It will be easily understood` from the foregoing, that the fan will be operated when pressure water is supplied from the pipe 13. Y

Fans of known types are heated by heat a due to friction of revolving parts thereof so that all of them are unable to supply air even at its atmospheric state and have a tendency of only Vsupplying somewhat hot and unpleasant air. According to this invention, this. drawbackis entirely obviated because the motor part of the fan is continuously cooled by water, so that theV air is cooled down to posite sides thereof, a transverse shaft jourl nailed in the openings and projecting beyond .the sides ofthe casing7 a turbine on theshaft within the casing and including blades having intermediate angular port-ions and side arc-shaped portions, la fluid pressure pipe arranged within the casing to direct fluid against the apex of the angular portionsV of the blades, disks ont-he projecting ends of the shafts adjacent the 4openings for preventing water from splashingv and leaking s0 through said openings, members forming, with the casing,`chambers to enclose the disks and provided with drain holes to drain on' leakage water in the hollow stand, brackets secured to the opposite sides of the casing, one of which forms a fan guard, fan blades also on the shaft, the extreme ends of the" shaft being provided vwith recesses, `screw threaded pins adjustable-'in said brackets having pointed ends engaged in said recesses for rotatablysupporting the shaft and adapted to `move theV shaft axially to center the turbine blades in properV position relative to the fluid pressure pipe.

In testimony VwhereofV I affix my signature.

Y MASAV'NAGAO. 

